2199866998784 has 512 divisors, whose sum is σ = 5640816599040. Its totient is φ = 834737799168.

The previous prime is 2199866998783. The next prime is 2199866998787. The reversal of 2199866998784 is 4878996689912.

It is a tau number, because it is divible by the number of its divisors (512).

It is a junction number, because it is equal to n+sod(n) for n = 2199866998696 and 2199866998705.

It is not an unprimeable number, because it can be changed into a prime (2199866998783) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14011891634 + ... + 14011891790.

It is an arithmetic number, because the mean of its divisors is an integer number (11017219920).

Almost surely, 2^{2199866998784} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2199866998784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2820408299520).

2199866998784 is an abundant number, since it is smaller than the sum of its proper divisors (3440949600256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2199866998784 is a wasteful number, since it uses less digits than its factorization.

2199866998784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 343 counting only the distinct ones).

The product of its digits is 6772211712, while the sum is 86.

The spelling of 2199866998784 in words is "two trillion, one hundred ninety-nine billion, eight hundred sixty-six million, nine hundred ninety-eight thousand, seven hundred eighty-four".